chrome/browser/browsing_data/browsing_data_remover.h

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef CHROME_BROWSER_BROWSING_DATA_BROWSING_DATA_REMOVER_H_
   6 #define CHROME_BROWSER_BROWSING_DATA_BROWSING_DATA_REMOVER_H_
   7
   8 #include <set>
   9
  10 #include "base/gtest_prod_util.h"
  11 #include "base/memory/ref_counted.h"
  12 #include "base/observer_list.h"
  13 #include "base/prefs/pref_member.h"
  14 #include "base/sequenced_task_runner_helpers.h"
  15 #include "base/synchronization/waitable_event_watcher.h"
  16 #include "base/task/cancelable_task_tracker.h"
  17 #include "base/time/time.h"
  18 #include "chrome/browser/pepper_flash_settings_manager.h"
  19 #include "components/search_engines/template_url_service.h"
  20 #if defined(OS_CHROMEOS)
  21 #include "chromeos/dbus/dbus_method_call_status.h"
  22 #endif
  23 #include "storage/common/quota/quota_types.h"
  24 #include "url/gurl.h"
  25
  26 class ExtensionSpecialStoragePolicy;
  27 class IOThread;
  28 class Profile;
  29
  30 namespace chrome_browser_net {
  31 class Predictor;
  32 }
  33
  34 namespace content {
  35 class PluginDataRemover;
  36 class StoragePartition;
  37 }
  38
  39 namespace disk_cache {
  40 class Backend;
  41 }
  42
  43 namespace net {
  44 class URLRequestContextGetter;
  45 }
  46
  47 namespace storage {
  48 class QuotaManager;
  49 }
  50
  51 namespace content {
  52 class DOMStorageContext;
  53 struct LocalStorageUsageInfo;
  54 struct SessionStorageUsageInfo;
  55 }
  56
  57 // BrowsingDataRemover is responsible for removing data related to browsing:
  58 // visits in url database, downloads, cookies ...
  59
  60 class BrowsingDataRemover
  61 #if defined(ENABLE_PLUGINS)
  62     : public PepperFlashSettingsManager::Client
  63 #endif
  64     {
  65  public:
  66   // Time period ranges available when doing browsing data removals.
  67   enum TimePeriod {
  68     LAST_HOUR = 0,
  69     LAST_DAY,
  70     LAST_WEEK,
  71     FOUR_WEEKS,
  72     EVERYTHING
  73   };
  74
  75   // Mask used for Remove.
  76   enum RemoveDataMask {
  77     REMOVE_APPCACHE = 1 << 0,
  78     REMOVE_CACHE = 1 << 1,
  79     REMOVE_COOKIES = 1 << 2,
  80     REMOVE_DOWNLOADS = 1 << 3,
  81     REMOVE_FILE_SYSTEMS = 1 << 4,
  82     REMOVE_FORM_DATA = 1 << 5,
  83     // In addition to visits, REMOVE_HISTORY removes keywords and last session.
  84     REMOVE_HISTORY = 1 << 6,
  85     REMOVE_INDEXEDDB = 1 << 7,
  86     REMOVE_LOCAL_STORAGE = 1 << 8,
  87     REMOVE_PLUGIN_DATA = 1 << 9,
  88     REMOVE_PASSWORDS = 1 << 10,
  89     REMOVE_WEBSQL = 1 << 11,
  90     REMOVE_CHANNEL_IDS = 1 << 12,
  91     REMOVE_CONTENT_LICENSES = 1 << 13,
  92     REMOVE_SERVICE_WORKERS = 1 << 14,
  93 #if defined(OS_ANDROID)
  94     REMOVE_APP_BANNER_DATA = 1 << 15,
  95 #endif
  96     // The following flag is used only in tests. In normal usage, hosted app
  97     // data is controlled by the REMOVE_COOKIES flag, applied to the
  98     // protected-web origin.
  99     REMOVE_HOSTED_APP_DATA_TESTONLY = 1 << 31,
 100
 101     // "Site data" includes cookies, appcache, file systems, indexedDBs, local
 102     // storage, webSQL, service workers, and plugin data.
 103     REMOVE_SITE_DATA = REMOVE_APPCACHE | REMOVE_COOKIES | REMOVE_FILE_SYSTEMS |
 104                        REMOVE_INDEXEDDB |
 105                        REMOVE_LOCAL_STORAGE |
 106                        REMOVE_PLUGIN_DATA |
 107                        REMOVE_SERVICE_WORKERS |
 108                        REMOVE_WEBSQL |
 109 #if defined(OS_ANDROID)
 110                        REMOVE_APP_BANNER_DATA |
 111 #endif
 112                        REMOVE_CHANNEL_IDS,
 113
 114     // Includes all the available remove options. Meant to be used by clients
 115     // that wish to wipe as much data as possible from a Profile, to make it
 116     // look like a new Profile.
 117     REMOVE_ALL = REMOVE_SITE_DATA | REMOVE_CACHE | REMOVE_DOWNLOADS |
 118                  REMOVE_FORM_DATA |
 119                  REMOVE_HISTORY |
 120                  REMOVE_PASSWORDS |
 121                  REMOVE_CONTENT_LICENSES,
 122   };
 123
 124   // When BrowsingDataRemover successfully removes data, a notification of type
 125   // NOTIFICATION_BROWSING_DATA_REMOVED is triggered with a Details object of
 126   // this type.
 127   struct NotificationDetails {
 128     NotificationDetails();
 129     NotificationDetails(const NotificationDetails& details);
 130     NotificationDetails(base::Time removal_begin,
 131                        int removal_mask,
 132                        int origin_set_mask);
 133     ~NotificationDetails();
 134
 135     // The beginning of the removal time range.
 136     base::Time removal_begin;
 137
 138     // The removal mask (see the RemoveDataMask enum for details).
 139     int removal_mask;
 140
 141     // The origin set mask (see BrowsingDataHelper::OriginSetMask for details).
 142     int origin_set_mask;
 143   };
 144
 145   // Observer is notified when the removal is done. Done means keywords have
 146   // been deleted, cache cleared and all other tasks scheduled.
 147   class Observer {
 148    public:
 149     virtual void OnBrowsingDataRemoverDone() = 0;
 150
 151    protected:
 152     virtual ~Observer() {}
 153   };
 154
 155   using Callback = base::Callback<void(const NotificationDetails&)>;
 156   using CallbackSubscription = scoped_ptr<
 157       base::CallbackList<void(const NotificationDetails&)>::Subscription>;
 158
 159   // The completion inhibitor can artificially delay completion of the browsing
 160   // data removal process. It is used during testing to simulate scenarios in
 161   // which the deletion stalls or takes a very long time.
 162   class CompletionInhibitor {
 163    public:
 164     // Invoked when a |remover| is just about to complete clearing browser data,
 165     // and will be prevented from completing until after the callback
 166     // |continue_to_completion| is run.
 167     virtual void OnBrowsingDataRemoverWouldComplete(
 168         BrowsingDataRemover* remover,
 169         const base::Closure& continue_to_completion) = 0;
 170
 171    protected:
 172     virtual ~CompletionInhibitor() {}
 173   };
 174
 175   // Creates a BrowsingDataRemover object that removes data regardless of the
 176   // time it was last modified. Returns a raw pointer, as BrowsingDataRemover
 177   // retains ownership of itself, and deletes itself once finished.
 178   static BrowsingDataRemover* CreateForUnboundedRange(Profile* profile);
 179
 180   // Creates a BrowsingDataRemover object bound on both sides by a time. Returns
 181   // a raw pointer, as BrowsingDataRemover retains ownership of itself, and
 182   // deletes itself once finished.
 183   static BrowsingDataRemover* CreateForRange(Profile* profile,
 184                                              base::Time delete_begin,
 185                                              base::Time delete_end);
 186
 187   // Creates a BrowsingDataRemover bound to a specific period of time (as
 188   // defined via a TimePeriod). Returns a raw pointer, as BrowsingDataRemover
 189   // retains ownership of itself, and deletes itself once finished.
 190   static BrowsingDataRemover* CreateForPeriod(Profile* profile,
 191                                               TimePeriod period);
 192
 193   // Calculate the begin time for the deletion range specified by |time_period|.
 194   static base::Time CalculateBeginDeleteTime(TimePeriod time_period);
 195
 196   // Is the BrowsingDataRemover currently in the process of removing data?
 197   static bool is_removing() { return is_removing_; }
 198
 199   // Sets a CompletionInhibitor, which will be notified each time an instance is
 200   // about to complete a browsing data removal process, and will be able to
 201   // artificially delay the completion.
 202   static void set_completion_inhibitor_for_testing(
 203       CompletionInhibitor* inhibitor) {
 204     completion_inhibitor_ = inhibitor;
 205   }
 206
 207   // Add a callback to the list of callbacks to be called during a browsing data
 208   // removal event. Returns a subscription object that can be used to
 209   // un-register the callback.
 210   static CallbackSubscription RegisterOnBrowsingDataRemovedCallback(
 211       const Callback& callback);
 212
 213   // Removes the specified items related to browsing for all origins that match
 214   // the provided |origin_set_mask| (see BrowsingDataHelper::OriginSetMask).
 215   void Remove(int remove_mask, int origin_set_mask);
 216
 217   void AddObserver(Observer* observer);
 218   void RemoveObserver(Observer* observer);
 219
 220   // Called when history deletion is done.
 221   void OnHistoryDeletionDone();
 222
 223   // Used for testing.
 224   void OverrideStoragePartitionForTesting(
 225       content::StoragePartition* storage_partition);
 226
 227  private:
 228   // The clear API needs to be able to toggle removing_ in order to test that
 229   // only one BrowsingDataRemover instance can be called at a time.
 230   FRIEND_TEST_ALL_PREFIXES(ExtensionBrowsingDataTest, OneAtATime);
 231
 232   // The BrowsingDataRemover tests need to be able to access the implementation
 233   // of Remove(), as it exposes details that aren't yet available in the public
 234   // API. As soon as those details are exposed via new methods, this should be
 235   // removed.
 236   //
 237   // TODO(mkwst): See http://crbug.com/113621
 238   friend class BrowsingDataRemoverTest;
 239
 240   enum CacheState {
 241     STATE_NONE,
 242     STATE_CREATE_MAIN,
 243     STATE_CREATE_MEDIA,
 244     STATE_DELETE_MAIN,
 245     STATE_DELETE_MEDIA,
 246     STATE_DONE
 247   };
 248
 249   // Setter for |is_removing_|; DCHECKs that we can only start removing if we're
 250   // not already removing, and vice-versa.
 251   static void set_removing(bool is_removing);
 252
 253   // Creates a BrowsingDataRemover to remove browser data from the specified
 254   // profile in the specified time range. Use Remove to initiate the removal.
 255   BrowsingDataRemover(Profile* profile,
 256                       base::Time delete_begin,
 257                       base::Time delete_end);
 258
 259   // BrowsingDataRemover deletes itself (using DeleteHelper) and is not supposed
 260   // to be deleted by other objects so make destructor private and DeleteHelper
 261   // a friend.
 262   friend class base::DeleteHelper<BrowsingDataRemover>;
 263
 264   // When plugins aren't enabled, there is no base class, so adding an override
 265   // specifier would result in a compile error.
 266 #if defined(ENABLE_PLUGINS)
 267   ~BrowsingDataRemover() override;
 268 #else
 269   ~BrowsingDataRemover();
 270 #endif
 271
 272   // Callback for when TemplateURLService has finished loading. Clears the data,
 273   // clears the respective waiting flag, and invokes NotifyAndDeleteIfDone.
 274   void OnKeywordsLoaded();
 275
 276   // Called when plugin data has been cleared. Invokes NotifyAndDeleteIfDone.
 277   void OnWaitableEventSignaled(base::WaitableEvent* waitable_event);
 278
 279 #if defined(ENABLE_PLUGINS)
 280   // PepperFlashSettingsManager::Client implementation.
 281   void OnDeauthorizeContentLicensesCompleted(uint32 request_id,
 282                                              bool success) override;
 283 #endif
 284
 285 #if defined (OS_CHROMEOS)
 286   void OnClearPlatformKeys(chromeos::DBusMethodCallStatus call_status,
 287                            bool result);
 288 #endif
 289
 290   // Removes the specified items related to browsing for a specific host. If the
 291   // provided |origin| is empty, data is removed for all origins. The
 292   // |origin_set_mask| parameter defines the set of origins from which data
 293   // should be removed (protected, unprotected, or both).
 294   void RemoveImpl(int remove_mask,
 295                   const GURL& origin,
 296                   int origin_set_mask);
 297
 298   // Notifies observers and deletes this object.
 299   void NotifyAndDelete();
 300
 301   // Checks if we are all done, and if so, calls NotifyAndDelete().
 302   void NotifyAndDeleteIfDone();
 303
 304   // Callback for when the hostname resolution cache has been cleared.
 305   // Clears the respective waiting flag and invokes NotifyAndDeleteIfDone.
 306   void OnClearedHostnameResolutionCache();
 307
 308   // Invoked on the IO thread to clear the hostname resolution cache.
 309   void ClearHostnameResolutionCacheOnIOThread(IOThread* io_thread);
 310
 311   // Callback for when the LoggedIn Predictor has been cleared.
 312   // Clears the respective waiting flag and invokes NotifyAndDeleteIfDone.
 313   void OnClearedLoggedInPredictor();
 314
 315   // Clears the LoggedIn Predictor.
 316   void ClearLoggedInPredictor();
 317
 318   // Callback for when speculative data in the network Predictor has been
 319   // cleared. Clears the respective waiting flag and invokes
 320   // NotifyAndDeleteIfDone.
 321   void OnClearedNetworkPredictor();
 322
 323   // Invoked on the IO thread to clear speculative data related to hostname
 324   // pre-resolution from the network Predictor.
 325   void ClearNetworkPredictorOnIOThread(
 326       chrome_browser_net::Predictor* predictor);
 327
 328   // Callback for when network related data in ProfileIOData has been cleared.
 329   // Clears the respective waiting flag and invokes NotifyAndDeleteIfDone.
 330   void OnClearedNetworkingHistory();
 331
 332   // Callback for when the cache has been deleted. Invokes
 333   // NotifyAndDeleteIfDone.
 334   void ClearedCache();
 335
 336   // Invoked on the IO thread to delete from the cache.
 337   void ClearCacheOnIOThread();
 338
 339   // Performs the actual work to delete the cache.
 340   void DoClearCache(int rv);
 341
 342 #if !defined(DISABLE_NACL)
 343   // Callback for when the NaCl cache has been deleted. Invokes
 344   // NotifyAndDeleteIfDone.
 345   void ClearedNaClCache();
 346
 347   // Invokes the ClearedNaClCache on the UI thread.
 348   void ClearedNaClCacheOnIOThread();
 349
 350   // Invoked on the IO thread to delete the NaCl cache.
 351   void ClearNaClCacheOnIOThread();
 352
 353   // Callback for when the PNaCl translation cache has been deleted. Invokes
 354   // NotifyAndDeleteIfDone.
 355   void ClearedPnaclCache();
 356
 357   // Invokes ClearedPnaclCacheOn on the UI thread.
 358   void ClearedPnaclCacheOnIOThread();
 359
 360   // Invoked on the IO thread to delete entries in the PNaCl translation cache.
 361   void ClearPnaclCacheOnIOThread(base::Time begin, base::Time end);
 362 #endif
 363
 364   // Callback for when Cookies has been deleted. Invokes NotifyAndDeleteIfDone.
 365   void OnClearedCookies(int num_deleted);
 366
 367   // Invoked on the IO thread to delete cookies.
 368   void ClearCookiesOnIOThread(net::URLRequestContextGetter* rq_context);
 369
 370   // Invoked on the IO thread to delete channel IDs.
 371   void ClearChannelIDsOnIOThread(
 372       net::URLRequestContextGetter* rq_context);
 373
 374   // Callback on IO Thread when channel IDs have been deleted. Clears SSL
 375   // connection pool and posts to UI thread to run OnClearedChannelIDs.
 376   void OnClearedChannelIDsOnIOThread(
 377       net::URLRequestContextGetter* rq_context);
 378
 379   // Callback for when channel IDs have been deleted. Invokes
 380   // NotifyAndDeleteIfDone.
 381   void OnClearedChannelIDs();
 382
 383   // Callback from the above method.
 384   void OnClearedFormData();
 385
 386   // Callback for when the Autofill profile and credit card origin URLs have
 387   // been deleted.
 388   void OnClearedAutofillOriginURLs();
 389
 390   // Callback on UI thread when the storage partition related data are cleared.
 391   void OnClearedStoragePartitionData();
 392
 393 #if defined(ENABLE_WEBRTC)
 394   // Callback on UI thread when the WebRTC logs have been deleted.
 395   void OnClearedWebRtcLogs();
 396 #endif
 397
 398   void OnClearedDomainReliabilityMonitor();
 399
 400   // Returns true if we're all done.
 401   bool AllDone();
 402
 403   // Profile we're to remove from.
 404   Profile* profile_;
 405
 406   // Start time to delete from.
 407   const base::Time delete_begin_;
 408
 409   // End time to delete to.
 410   base::Time delete_end_;
 411
 412   // True if Remove has been invoked.
 413   static bool is_removing_;
 414
 415   // If non-NULL, the |completion_inhibitor_| is notified each time an instance
 416   // is about to complete a browsing data removal process, and has the ability
 417   // to artificially delay completion. Used for testing.
 418   static CompletionInhibitor* completion_inhibitor_;
 419
 420   CacheState next_cache_state_;
 421   disk_cache::Backend* cache_;
 422
 423   // Used to delete data from HTTP cache.
 424   scoped_refptr<net::URLRequestContextGetter> main_context_getter_;
 425   scoped_refptr<net::URLRequestContextGetter> media_context_getter_;
 426
 427 #if defined(ENABLE_PLUGINS)
 428   // Used to delete plugin data.
 429   scoped_ptr<content::PluginDataRemover> plugin_data_remover_;
 430   base::WaitableEventWatcher watcher_;
 431
 432   // Used to deauthorize content licenses for Pepper Flash.
 433   scoped_ptr<PepperFlashSettingsManager> pepper_flash_settings_manager_;
 434 #endif
 435
 436   uint32 deauthorize_content_licenses_request_id_;
 437   // True if we're waiting for various data to be deleted.
 438   // These may only be accessed from UI thread in order to avoid races!
 439   bool waiting_for_clear_autofill_origin_urls_;
 440   bool waiting_for_clear_cache_;
 441   bool waiting_for_clear_channel_ids_;
 442   bool waiting_for_clear_content_licenses_;
 443   // Non-zero if waiting for cookies to be cleared.
 444   int waiting_for_clear_cookies_count_;
 445   bool waiting_for_clear_domain_reliability_monitor_;
 446   bool waiting_for_clear_form_;
 447   bool waiting_for_clear_history_;
 448   bool waiting_for_clear_hostname_resolution_cache_;
 449   bool waiting_for_clear_keyword_data_;
 450   bool waiting_for_clear_logged_in_predictor_;
 451   bool waiting_for_clear_nacl_cache_;
 452   bool waiting_for_clear_network_predictor_;
 453   bool waiting_for_clear_networking_history_;
 454   bool waiting_for_clear_platform_keys_;
 455   bool waiting_for_clear_plugin_data_;
 456   bool waiting_for_clear_pnacl_cache_;
 457   bool waiting_for_clear_storage_partition_data_;
 458 #if defined(ENABLE_WEBRTC)
 459   bool waiting_for_clear_webrtc_logs_;
 460 #endif
 461
 462   // The removal mask for the current removal operation.
 463   int remove_mask_;
 464
 465   // The origin for the current removal operation.
 466   GURL remove_origin_;
 467
 468   // From which types of origins should we remove data?
 469   int origin_set_mask_;
 470
 471   ObserverList<Observer> observer_list_;
 472
 473   // Used if we need to clear history.
 474   base::CancelableTaskTracker history_task_tracker_;
 475
 476   scoped_ptr<TemplateURLService::Subscription> template_url_sub_;
 477
 478   // We do not own this.
 479   content::StoragePartition* storage_partition_for_testing_;
 480
 481   DISALLOW_COPY_AND_ASSIGN(BrowsingDataRemover);
 482 };
 483
 484 #endif  // CHROME_BROWSER_BROWSING_DATA_BROWSING_DATA_REMOVER_H_